Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS6527132 B1
Publication typeGrant
Application numberUS 09/462,781
PCT numberPCT/AU1998/000510
Publication dateMar 4, 2003
Filing dateJul 3, 1998
Priority dateJul 14, 1997
Fee statusLapsed
Also published asCA2296301A1, CN1088030C, CN1205295A, CN2371141Y, CN2377196Y, EP1028900A1, EP1028900A4, US6991123, US20030116523, WO1999003746A1
Publication number09462781, 462781, PCT/1998/510, PCT/AU/1998/000510, PCT/AU/1998/00510, PCT/AU/98/000510, PCT/AU/98/00510, PCT/AU1998/000510, PCT/AU1998/00510, PCT/AU1998000510, PCT/AU199800510, PCT/AU98/000510, PCT/AU98/00510, PCT/AU98000510, PCT/AU9800510, US 6527132 B1, US 6527132B1, US-B1-6527132, US6527132 B1, US6527132B1
InventorsRodney Malcolm Druitt, Michael Patrick Furlong
Original AssigneeClosures And Packaging Services Limited
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Closure with extended seal member
US 6527132 B1
Abstract
A closure (10) having a sealing rib (14) projecting downwardly from the underside of its top portion (11). The first portion (15) of the sealing rib (14) increases in thickness as it extends away from the top portion (11). In another aspect, the invention relates to a closure (10) in which the sealing rib (14) has a third portion (18) that is substantially no thicker than the second portion (17) of the rib (14) and has a length longer, and preferably substantially longer, than its thickness. In the second aspect, the third portion (18) of the rib (14) is connected to the second portion (17) at or adjacent its free edge and extends generally in a direction away from the top portion (11). Upon attachment of the closure (10) with the neck (22) of a container, the third portion (18) will be displaced to lie between the end portion (23) of the neck (22) of the container and the top portion (11) of the closure (10).
Images(6)
Previous page
Next page
Claims(23)
What is claimed is:
1. A closure suitable for mounting onto a container having an opening defined by an end portion of the container, the closure being moulded from a synthetic plastics material and including a top portion and a skirt portion depending from the top portion, an annular sealing rib projecting downwardly from an underside of the top portion, the rib including a first portion which is contiguous with the top portion had having an inner surface, which inner surface lies radially inward of the skirt portion, and a second, frusto-conical, portion contiguous with the first portion and separated from the top portion by the inner surface of the first portion, the second portion extending radially inwardly to terminate in a circular edge, the closure being characterized in that the sealing rib has a third portion connected to the second portion at a position radially outwardly of the circular edge and extending generally in a direction away from the top portion, the third portion being substantially no thicker than the second portion and having a length longer than its thickness, the first portion having an internal diameter relative to the external diameter of the end portion of the container such that during attachment of the closure with the end portion of the container, the second frusto-conical portion of the sealing rib will be engaged by a free end of said end portion of the container and folded back at least adjacent the inner surface of the first portion of the rib, and with the third portion of the rib positioned between the neck of the container and the top portion of the closure.
2. The closure of claim 1 wherein the third portion is contiguous with the free edge of the second portion.
3. The closure of claim 1 wherein the third portion joins the second portion in an angular disjunction.
4. The closure of claim 1 wherein the third portion joins the second portion in a smooth angular transition from the generally radially inward direction of the second portion to a generally axial direction.
5. The closure of claim 1 wherein the skirt portion has an inner surface having a screw thread adapted to engage with a corresponding thread on the external surface of the end portion of the container.
6. The closure of claim 1 wherein the skirt portion has an inner surface having a rib adapted to engage with a corresponding groove on the external surface of the end portion of the container.
7. The closure of claim 1 wherein the first portion of the rib is formed radially inwardly of the skirt portion with an annular space therebetween.
8. The closure of claim 1 wherein the first portion of the rib is in continuous abutment with the skirt portion.
9. The closure of claim 8 wherein the first portion of the rib comprises a thickening of the skirt portion adjacent the top portion.
10. The closure of claim 1 wherein the first portion serves to form an abutment towards which the second portion is folded during attachment of the closure with the neck of a container.
11. The closure of claim 1 wherein during attachment of the closure with the neck of the container, the second portion is folded back against the first portion so that it bears against the inner surface of the first portion.
12. The closure of claim 1 wherein the closure is made from polyethylene.
13. The closure of claim 1 wherein the closure is formed in one piece.
14. The closure of claim 1 wherein the closure has a tamper evident band adapted to provide an indication of removal or attempted removal of the closure from a container.
15. The closure of claim 14 wherein the tamper evident band extends from the skirt portion by connection through a plurality of frangible bridges.
16. The closure of claim 15 wherein the band comprises a generally cylindrical body portion and a segmented rib extending inwardly of the body portion and adapted to provide a lip having an inner free edge to engage under a retaining flange extending outwardly from the end portion of the container, characterised in that the combined length of the segmented ribs is equal to at least 50% of the internal circumference of the band and the segmented ribs are separated from each other by a gap, the rib segments each having an upper surface facing generally towards the top portion of the closure and an underside facing generally away from the top portion the inner surface of the band having a plurality of radially inward projections extending from above the free edge of the band and not extending beyond the inner free edge of the lip.
17. The closure of claim 15 wherein the band comprises a generally cylindrical body portion and a segmented rib extending inwardly of the body portion and adapted to provide a lip having an inner free edge to engage under a retaining flange extending outwardly from the end portion of the container, the rib segments each having an upper surface facing generally towards the top portion of the closure and an underside facing generally away from the top portion, characterised in that the upper surface of each rib comprises a first surface contiguous with the body portion of the band, which surface slopes inwardly and downwardly away from the top portion, and a second surface which extends radially inwardly from the inner terminus of the first surface and has a slope angle substantially normal to the skirt portion of the closure.
18. The closure of claim 16 and further wherein the rib segments each have an upper surface facing generally towards the top portion of the closure and an underside facing generally away from the top portion, characterised in that the upper surface of each rib comprises a first surface contiguous with the body portion of the band, which surface slopes inwardly and downwardly away from the top portion, and a second surface which extends radially inwardly from the inner terminus of the first surface and has a slope angle substantially normal to the skirt portion of the closure.
19. The closure of claim 1 wherein the sealing rib includes a substantially annular region of weakness formed around an inside surface of the sealing rib approximately at the join between the first and second portions of the sealing rib.
20. The closure of clam 1 wherein the underside of the top portion of the closure is provided with a segmented annular ridge positioned inwardly and adjacent the first portion of the sealing rib.
21. The closure of claim 1 wherein the underside of the top portion of the closure is provided with a continuous annular ridge positioned inwardly and adjacent the first portion of the sealing rib.
22. The closure of claim 1 wherein the first portion of the rib increases in thickness as it extends away from the top portion of the closure.
23. The closure of claim 22 wherein the thickness of the first portion increases at a uniform rate along the length of the first portion away from the underside of the top portion.
Description
TECHNICAL FIELD

The present invention relates to linerless closures for containers including, but not limited to, carbonated beverage containers. More particularly, the invention relates to such closures that are formed of a synthetic plastics material and, preferably, in one piece.

BACKGROUND ART

U.S. Pat. No. 5,423,444 discloses a plastic closure for a container having an externally screw threaded neck, the closure including a top portion and an internally threaded skirt. The closure has an annular sealing rib which projects downwardly from the underside of the top portion. The rib includes a first, substantially cylindrical portion contiguous with the underside of the top portion and lying adjacent to or abutting with the skirt, and a second, frusto-conical, portion contiguous with the end of the first portion distal to the underside of the top portion and extending radially inwardly to a circular free edge. During threaded attachment of the closure with the neck, the second, frusto-conical, portion will be engaged by a free end of the neck and folded back against the first, substantially cylindrical portion of the rib to form a gas tight seal between the neck of the container and the closure.

U.S. Pat. No. 5,609,263 discloses a variant of the above closure in which there is at the free end of the second portion of the rib a thick seal ring of substantially circular cross-sectional shape. The rib and the seal ring are dimensioned to engage the free end of the neck when the closure is threaded onto the neck such that when the neck is fully screwed into the closure its free end crushes the seal ring directly against the inside surface of the top portion of the closure.

The present invention is directed to two arrangements of closure that improve the sealing ability of closures of the type identified in the abovementioned prior art.

DISCLOSURE OF INVENTION

The present invention relates to a closure suitable for mounting onto a container having an opening defined by an end portion of the container, the closure being moulded from a synthetic plastics material and including a top portion and a skirt portion depending from the top portion, an annular sealing rib projecting downwardly from an underside of the top portion, the rib including a first portion which is contiguous with the top portion and having an inner surface, which inner surface lies radially inwardly of the skirt portion, and a second, frusto-conical, portion contiguous with the first portion and separated from the top portion by the inner surface of the first portion, the second portion extending radially inwardly to terminate in a circular edge, the first portion having an internal diameter relative to the external diameter of the end portion of the container such that during attachment of the closure with the end portion of the container, the second frusto-conical portion of the sealing rib will be engaged by a free end of said end portion of the container and folded back at least adjacent the inner surface of the first portion of the rib, the closure being characterised in that the first portion of the rib increases in thickness as it extends away from the top portion of the closure.

In a second aspect, the present invention relates to a closure suitable for mounting onto a container having an opening defined by an end portion of the container the closure being moulded from a synthetic plastics material and including a top portion and a skirt portion depending front the top portion, an annular sealing rib projecting downwardly from an underside of the top portion, the rib including a first portion which is contiguous with the top portion and having an inner surface, which inner surface lies radially inwardly of the skirt portion, and a second, frusto-conical, portion contiguous with the first portion and separated from the top portion by the inner surface of the first portion, the second portion extending radially inwardly to terminate in a circular edge, the closure being characterised in that the sealing rib has a third portion connected to the second portion at or adjacent the circular edge and extending generally in a direction away from the top portion, the third portion being substantially no thicker than the second portion and having a length longer than its thickness, the first portion having an internal diameter relative to the external diameter of the end portion of the container such that during attachment of the closure with the end portion of the container, the second frusto-conical portion of the sealing rib will be engaged by a free end of said end portion of the container and folded back at least adjacent the inner surface of the first portion of the rib, and with the third portion of the rib positioned between the neck of the container and the top portion of the closure.

The closures are preferably provided with a screw thread on the inside surface of the skirt portion adapted to engage with a corresponding thread on an external surface of the end portion of the container. It is, however, possible for the container and the closure to be formed with other complementary attachment means. Such an arrangement could, for instance, comprise snap-on attachment means having a rib on the inside surface of the closure and a corresponding groove on the outside surface of the end portion of the container.

The first portion of the rib is preferably formed radially inwardly of the skirt with an annular space therebetween. It is, however, possible in other embodiments to form the first portion of the rib in abutment with the skirt in the sense that they are continuous. In one embodiment of the above aspects of the invention, the first portion of the rib is observed as a thickening of the skirt portion so that the root of the second portion of the rib is moved inwardly of the part of the skirt portion carrying the screw thread or other attachment means.

In each aspect, the first portion serves to form an abutment towards which the second portion is folded during attachment of the closure with the end portion of a container. Preferably, the second portion will be folded back against the first portion such that it bears against the inner surface of the first portion. This will cause the second portion to bear more strongly against the outside surface of the end portion of the container and so form a better seal with the end portion.

The first aspect of the present invention is directed to the first portion of the rib having a thickness that increases in a direction away from the top portion of the closure. This thickening of the first portion will increase the force of the pressure of the rib against the outside surface of the end portion of the closure. The thickness of the first portion preferably increases at a uniform rate along the length of the first portion however it could do so in a non-uniform manner. The increase in the thickness of the first portion means that the inside and outside surfaces of the first portion will not necessarily be exactly cylindrical. They my respectively taper slightly inwardly and outwardly relative to the axis of the closure in a direction away from the top portion of the closure.

In the second aspect of the present invention, the rib includes a third portion. This third portion is preferably contiguous with the free edge of the second portion, though it may be spaced slightly radially outwardly front it. The third portion projects generally away front the top of the closure. It may join the second portion in an angular disjunction or it may join it in a smooth angular transition from the generally radially inward direction of the second portion to a generally axial direction.

It is of the essence of this second aspect of the present invention that the third portion of the rib be substantially no thicker than the second portion and also be relatively longer in relation to its thickness. It has been found that the sealing qualities of the closure are best improved by providing a thin extension to the second portion of the rib that will wrap around the free end of the end portion of the container front a position on a cylindrical outer surface of the end portion at least to the apex of the free end of the end portion. It has also been found that this construction also reduces the torque needed to unscrew a closure from a corresponding container to which it has been attached.

The closures according to the present invention may be made of any suitable synthetic plastics material, however it is preferred to form them from a suitable grade of polyethylene or polypropylene. It is also preferred to form the closure in one piece by injection or rotary moulding. The closures could, however, be formed in two parts with the sealing rib formed separately from the top portion and the skirt portion.

It will be apparent to persons skilled in the art that numerous modifications may be made to the closures described in this specification without departing from the scope of the invention as earlier defined. The closure may, for instance, be provided with a tamper evident band, for example a band such as is described in Australian patent specifications 668197 and 683598, the contents whereof are incorporated herein by reference.

Where the closure has a screw thread on the inner surface of the skirt, the thread can be continuous or formed of a series of thread segments. If formed front a series of thread segments, the thread segments can be arranged, starting from a first thread segment distal to the top, along a helical thread locus, as is described in Australian patent specification 668197. Each of the thread segments except the first can be formed with two substantially planar end surfaces that are inclined to the axis of the closure and face away from the top of the closure, that is they face in the direction that a mould core used to mould the closure was withdrawn. In this specification, the term “substantially planar surface” is used to describe a surface that is nearly actually planar or that is curved provided that it all faces in the defined direction. The first of the thread segments is preferably pointed at its end distal to its one adjacent thread segment to assist in sating the thread on the closure with a complementary thread on the neck of a container.

The substantially planar ends of the thread segments can also be inclined to a notional radial plane of the closure extending from the longitudinal axis of the closure to the end of the respective thread segment such that the ends are inclined to the cylindrical skirt by an angle that is less than the angle that the respective notional plane makes with that skirt.

To assist in the venting of gas that may be present in the container, the spaces between the thread segments in adjacent turns of the thread can be aligned. A groove may also be provided on the inside surface of the skirt of the closure extending longitudinally thereof through the aligned spaces.

There also can be at the line of meeting of the first and second portions of the sealing rib, a weakened zone or annular region of weakness to assist even deformation of the second portion relative to the first as the closure is applied to a container as is described in Australian patent specification 637706, the contents whereof are incorporated herein by reference.

The underside of the top portion of the closure can also have a continuous or segmented annular ridge radially inside of the sealing rib. The upper surface of the second portion of the rib may also be formed with an engagement means comprising a segmented or continuous annular ridge as is described in Australian patent specification 74544/94, the contents whereof are incorporated herein by preference. On attachment of the closure with the neck of a container, the engagement means engage with the underside of the top portion.

In accordance with the above, the closure can have a taper evident band adapted to provide an indication of removal or attempted removal of the closure from a container. The tamper evident band can extend from the skirt portion by connection through a plurality of frangible bridges.

The band can also comprise a generally cylindrical body portion and a segmented rib extending inwardly of the body portion and adapted to provide a lip having an inner free edge to engage under a retaining flange extending outwardly from the end portion of the container, characterised in that the combined length of the segmented ribs is equal to at least 50% of the internal circumference of the band and the segmented ribs are separated from each other by a gap, the rib segments each having an upper surface facing generally towards the top portion of the closure and an underside facing generally away from the top portion, the inner surface of the band having a plurality of radially inward projections extending from above the free edge of the band and not extending beyond the inner free edge of the lip.

The band can also comprise a generally cylindrical body portion and a segmented rib extending inwardly of the body portion and adapted to provide a lip having an inner free edge to engage under a retaining flange extending outwardly from the end portion of the container, the rib segments each having an upper surface facing generally towards the top portion of the closure and an underside facing generally away from the top portion, characterised in that the upper surface of each rib comprises a first surface contiguous with the body portion of the band, which surface slopes inwardly and downwardly away from the top portion, and a second surface which extends radially inwardly from the inner terminus of the first surface and has a slope angle substantially normal to the skirt portion of the closure.

BRIEF DESCRIPTION OF DRAWINGS

The following description of a preferred embodiment of the present invention is provided as an example of the invention and is described with reference to the accompanying drawings, in which:

FIG. 1 is a diametrical sectional view through a part of a closure according to the first and the second aspects of the present invention;

FIG. 2 is a diametrical sectional view through a part of another embodiment of a closure according to the second aspect of the present invention;

FIG. 2a is a diametrical sectional view through a part of another embodiment of a closure according to the second aspect of the present invention;

FIG. 3 is a diametrical sectional view of a part of the closure of FIG. 2 when applied to the end portion of a container;

FIG. 4 is a vertical sectional view through a part of an embodiment of a closure according to the first aspect of the present invention; and

FIG. 5 is a vertical sectional view through a part of another embodiment of a closure according to the second aspect of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

The closure 10 shown in FIG. 1 comprises a circular top 11 and a depending skirt 12. The radially inner surface of the skirt 12 is provided with a non-segmented screw thread 13 adapted to mate with a corresponding thread on the neck of a bottle to which the closure 10 is adapted to be attached. While the embodiments of the closure depicted in FIGS. 1 to 4 are depicted with non-segmented screw threads, other suitable means for attaching the closure to the container would be immediately apparent to a person skilled in the art. The segmented screw thread on the embodiment of the closure depicted in FIG. 5 can also readily be envisaged as being used, if required, on the embodiments of the closure depicted in FIGS. 1-4. The radially outer surface of the skirt 12 carries a series of fine vertical ribs 24. The fine ribs 24 can terminate at the lower edge of the skirt 12 in a narrow circumferential rib 25 as, for example, depicted on the closure of FIG. 5.

A sealing rib 14 is provided on the underside of the top 11 of the closure 10. The rib 14 is continuous and annular. Seen in cross-section the rib 14 has three portions 15, 17 and 18. The first portion 15 is contiguous with the top 11 and is substantially cylindrical in shape. The thickness of the first portion 15 increases as the first portion 15 progresses away from the top 11. The inside surface 16 of the first portion is thus not exactly cylindrical, at least until the closure has been applied to the neck of a bottle. The second portion 17 of the rib 14 is frusto-conical in form and tapers slightly in thickness as it extends radially inwardly from its outer edge which is contiguous with the lower end of the first portion 15. A sharp edge 20 is formed between the first portion 15 and the second portion 17. This sharp edge 20 defines a line of weakness between the two parts for a purpose that will be described later in this specification. The third portion 18 is contiguous with the radially inner end of the second portion 17, the two joining in a curved transition zone 19. The transition zone 19 changes the direction of the third portion 18 so that it projects substantially in an axial direction away from the top 11.

A short downwardly extending ridge 21 is also provided on the underside of the top 11 radially inside the rib 14.

The arrangement shown in FIGS. 2 and 3 is essentially similar to that described in FIG. 1 with the exception that the first portion 15 of the rib 14 is of constant thickness along its length and the second portion 17 and the third portion 18 join in a sharp angular disjunction rather than the smoothly curved transition zone 19 seen in FIG. 1. As is seen in FIG. 3 when the closure 10 is applied to the neck 22 of a bottle, a free end 23 of the neck 22 engages the radially outer side of the third portion 18 and starts to push it towards the inside surface of the top 11. The second portion 17 is also pushed upwardly towards the top 11. As the second portion 17 is pushed upwardly it bends relative to the first portion 15 along the line of weakness defined by the sharp edge 20. This ensures that the folding back of the second portion 17 relative to the first portion 15 takes place evenly around the whole circumference of the rib 14. The folding back of the second portion 17, and with it the third portion 18, continues until the third portion 18 is trapped between the free end 23 of the neck 22 and the inside surface of the top 11. When this happens the second portion 15 will normally be folded back adjacent to or in contact with the inside surface 16 of the first portion 15. In the embodiment depicted in FIG. 3, the first portion 15 is pushed radially outwardly and bears against the radially inner surface of the skirt 12. A seal will then be formed between the closure 10 and the neck 22 extending from a radially outer portion of the neck 22 around to the apex of the free end 23. While the arrangement shown in FIG. 3 has the first portion 15 of constant thickness it will be appreciated that if the first portion 15 were to taper outwardly in thickness towards its lower end (as is shown in FIG. 1) then this would have the effect of causing the first portion 15 to bear against the inside surface of the skirt 12 sooner and thus to apply more pressure to the radially outer surface of the neck 22 and thus further improve the seal between the closure 10 and the neck 22.

While the third portion 18 is contiguous with the radial inner end of the second portion 17 in FIG. 2, an alternative embodiment is depicted in FIG. 2a in which the third portion 18 extends downwardly from the second portion 17 adjacent its inner end. While the third portion 18 is in a slightly different position, the manner in which the second portion 17 of the sealing rib 14 will fold back towards the inner surface 16 of the first portion 15 is substantially identical to that depicted in FIG. 3.

FIGS. 4 and 5 show respectively a part of a closure according to the first aspect of the present invention and a part of a closure according to the second aspect of the invention. In the case of FIG. 4 the closure 10 has a first portion 15 which increases in thickness away from the top 11 but without a third portion 18. In FIG. 5 the closure 10 has a rib 14 in which there is a transition zone 19 between the second portion 17 and the third portion 18 that is of relatively large radius.

In FIG. 4, the closure also has a short downwardly extending ridge 21 provided on the underside of the top 11 radially inside the rib 14. On the upper surface of the second portion 17 of the sealing rib 14 and adjacent its inner end, there is also provided a continuous annular ridge 26. When the closure 10 is attached to the neck 22 of a container and the second portion 17 is folded back towards the first portion 15, the annular ridge 26 engages with the underside of the top portion 11. In some cases, the annular ridge 26 can also interlock with the downwardly extending ridge 21 provided on the underside of the top 11 of the closure 10. While ridges 21, 26 are each depicted as continuous, the ridges can be readily envisaged as being comprised of a plurality of segments separated by short gaps.

As depicted in FIG. 5, the closure 10 includes a band 30 attached by frangible bridges 31 to the lower edge of the skirt 12. The band 30 includes a rib 32 about its inside surface being sized and shaped so as to provide an inwardly extending lip which will engage under the retaining flange 33 (see FIG. 3) of the neck 22 of the container once the closure 10 is fully closed onto the neck 22.

The rib 32 is made up of a series of rib segments 37 separated by short breaks 38 and in the depicted embodiment constitutes about 85% of the circumference of the band 30. The short breaks 38 provide circumferential flexibility to the band 30 and allow the rib 32 to pass over the retaining flange 33 without creating a stress sufficient to break the frangible bridges 31.

The rib 32 has an upper side directed towards the top 11 of the closure 10 and an under side directed away from it. The upper side includes a radially outer frusto-conical surface 34 and a radially inner annular surface 35. The annular surface 35 lies in a plane normal to a longitudinal axis of the closure 10 while the frusto-conical surface 34 is inclined inwardly and downwardly away from the top portion 11 and makes an angle of about 20° with the plane normal to the longitudinal axis of the closure. The presence of the frusto-conical surface 34 assists in the moulding of the closure 10 as it prevents or at least substantially reduces the production of closures having deformed ribs 32.

Below the rib 32 and still on the inside surface of the band 30 is an arrangement of a plurality of inward extending projections 36 each having a long axis generally aligned with the longitudinal axis of the closure 10. The projections 36 serve to help prevent a person from introducing a device such as a knife blade radially inwardly of the body portion 12 of the band 30 and progressively moving the device circumferentially around the band in an effort to gradually prise the rib 32 up and over the flange 33 on the container.

In FIG. 5, the thread 13 is made up of a plurality of thread segments 39 arranged in spaced apart array along the locus of the thread. Each thread segment, except the first segment 40, is bounded at each end by a planar surface 41. Each of the planar surfaces 41 are inclined to the longitudinal axis of the closure 10 so that it faces away from the top 11. Each planar surface 41 is also inclined relative to a notional radial plane extending from the axis of the closure 10 to the planar surface 41 in question such that the minimum included angle between the planar surface 41 and the skirt 12 is acute and is less than the angle that a notional radial plane makes with the skirt 12.

The first thread segment 40 is formed with a planar surface 41 on its trailing edge, however, it is formed with a point 42 on its leading edge to assist in mating the thread with a corresponding thread on the neck 22 of a container.

The thread segments 39 in each turn of the thread are aligned as are the spaces between them. A groove 43 is formed on the inside surface of the skirt 12 in each of the aligned spaces between adjacent thread segments 39. The grooves 43 serve to assist in venting any gas that may be present in the container and, in particular, gases from carbonated beverages as the closure 10 is unscrewed from the container.

It will be appreciated by persons skilled in the art that numerous variations and/or modifications may be made to the invention as shown in the specific embodiments without departing from the spirit or scope of the invention as broadly described. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2162711Mar 31, 1936Jun 20, 1939John HambergerTamperproof closure
US2162712Jul 9, 1936Jun 20, 1939John HambergerContainer and closure therefor
US2162752Oct 19, 1934Jun 20, 1939John HambergerTamperproof closure
US2162754Jun 5, 1937Jun 20, 1939John HambergerTamperproof closure and container
US2367317Jul 4, 1942Jan 16, 1945Aluminum Co Of AmericaClosure
US2990077May 10, 1957Jun 27, 1961Baarn Paul S VanClosures
US3032226Dec 23, 1960May 1, 1962Terwilliger Floyd AContainer closure
US3038624Sep 18, 1956Jun 12, 1962Huber KarlContainer closure
US3053406Jun 14, 1960Sep 11, 1962Wandell James WScrew cap
US3055526Dec 21, 1959Sep 25, 1962Robert L PlunkettPlastic cap
US3067900Jul 28, 1960Dec 11, 1962Kessler MiltonSelf-venting pressure-release sealing cap
US3069040Aug 15, 1961Dec 18, 1962Drackett CoContainer closure
US3109547Mar 1, 1961Nov 5, 1963Permuta Closures LtdBottle closures
US3141586Sep 20, 1962Jul 21, 1964Jonkopings Vacuumindustri AbContainer closure having pressure relieving means
US3142402Feb 7, 1962Jul 28, 1964Tosca Seal Control Co LtdScrew-type sealing caps
US3145869Jan 24, 1963Aug 25, 1964Seidel K G Fa GebSealing cap
US3151757 *Jul 17, 1961Oct 6, 1964Smith & Stone LtdContainer closure
US3200981Oct 1, 1962Aug 17, 1965Wicanders Korkfabriker AbBottle caps
US3203571Dec 6, 1960Aug 31, 1965Robert L PlunkettSelf sealing cap construction
US3224617Dec 19, 1962Dec 21, 1965Owens Illinois Glass CoClosure with integrally formed sealing surface
US3255907Jan 13, 1964Jun 14, 1966Wheeling Stamping CoLinerless screw closure for containers
US3259233Sep 9, 1963Jul 5, 1966Monsanto CoContainer closure
US3286866Apr 15, 1965Nov 22, 1966Mack Wayne Plastics CoPlastic cap
US3329295Nov 29, 1965Jul 4, 1967Zbislaw M RoehrTamper-indicating closure
US3335889Sep 23, 1965Aug 15, 1967Nackenheim Ver KapselfabSafety closure cap
US3393818Feb 28, 1967Jul 23, 1968Mack Wayne Plastics CoPlastic cap having pressure venting features
US3405830May 5, 1966Oct 15, 1968Kouichi HayashidaBottle-stopper
US3438528Aug 4, 1967Apr 15, 1969Roehr Metals & Plastics CoTamper-indicating closure
US3441161Mar 9, 1967Apr 29, 1969Baarn Paul S VanBottle cap
US3455478Jul 21, 1967Jul 15, 1969Roehr Metals & Plastics CoTamper-indicating closure
US3463341Dec 18, 1967Aug 26, 1969Roehr Metals & Plastics CoTamper-indicating closure
US3494496Jan 8, 1968Feb 10, 1970Jay G LivingstoneClosure cap and container-and-cap assembly
US3568871May 12, 1969Mar 9, 1971Jay G LivingstoneClosure cap
US3583591Jun 5, 1969Jun 8, 1971Kouichi HayashidaBottle cap
US3632005Dec 12, 1969Jan 4, 1972Kessler MiltonDouble-seal plastic cap with flexible rim-engaging flange
US3673761Feb 4, 1971Jul 4, 1972Ciba Geigy AgMethod of applying pilfer-proof closures
US3737064May 17, 1971Jun 5, 1973Patel CPilfer-proof closure for containers
US3750821Apr 28, 1972Aug 7, 1973Devylder RPilfer-proof closure
US3784041May 5, 1971Jan 8, 1974R BirchClosure cap
US3802590May 22, 1972Apr 9, 1974Bernardin IncLinerless container closure
US3814274Apr 5, 1972Jun 4, 1974Mack Wayne Plastics CoLinerless closure for a container
US3851784Apr 24, 1972Dec 3, 1974Polytop CorpSeal structure
US3854618Jul 25, 1973Dec 17, 1974Beghnini GVacuum packaging
US3865263Oct 10, 1973Feb 11, 1975Ump Plastics LtdClosure cap
US3874540Jan 30, 1974Apr 1, 1975Hidding Walter ETamperproof cap
US3901404May 3, 1973Aug 26, 1975Dairy Cap CorpBottle cap
US3904062Jun 28, 1974Sep 9, 1975Somepla SaTamper-proof and loss-proof screw-type bottle cap
US3927784Feb 13, 1975Dec 23, 1975Cochrane Ben ATamper-proof bottle cap and container
US3930588Feb 11, 1974Jan 6, 1976Le Bouchage MecaniqueBottle cap
US3948405Feb 11, 1975Apr 6, 1976Vca CorporationLinerless container closure
US3986627Dec 15, 1975Oct 19, 1976Refil AktiengesellschaftClosure
US3990598Dec 15, 1975Nov 9, 1976Refil AktiengesellschaftDispensing closure
US4016966Mar 24, 1976Apr 12, 1977Royal Business Machines, Inc.Typewriter jam release mechanism
US4016996 *Jun 22, 1976Apr 12, 1977Albert Obrist AgContainer with screw cap and seal
US4033472Apr 8, 1975Jul 5, 1977Albert Obrist AgClosure for containers
US4061240Jun 14, 1976Dec 6, 1977John Dale LimitedClosure cap and container
US4069937Jan 28, 1977Jan 24, 1978Owens-Illinois, Inc.Linerless closure
US4089463Jan 14, 1977May 16, 1978Societe Nouvelle De Bouchons Plastiques S.N.B.P.Screw caps
US4090631Jan 31, 1977May 23, 1978Jean GrussenScrew-type bottle cap having improved sealing properties
US4109814Nov 8, 1976Aug 29, 1978Ab ZiristorContainer closure
US4109816Nov 1, 1976Aug 29, 1978Three Sisters Ranch EnterprisePlastic cap for bottle
US4125201Nov 9, 1977Nov 14, 1978U.M.P. Plastics LimitedClosure cap
US4126240Jul 12, 1976Nov 21, 1978Zeller PlastikTamper indicating closure
US4147268Sep 24, 1976Apr 3, 1979Patel Chandrakant SPilfer-proof closure for containers
US4165813May 1, 1978Aug 28, 1979Societe Nouvelle De Bouchons PlastiqueSecurity closure device for bottles
US4177906May 31, 1978Dec 11, 1979Maxcap Inc.Blow molded plastic bottle and plastic cap
US4196818Apr 17, 1978Apr 8, 1980Metal Closures Group LimitedClosures for containers
US4197955Oct 26, 1978Apr 15, 1980Ethyl Products CompanyTamper-proof closure
US4210251May 16, 1978Jul 1, 1980Jean GrussenOne piece molded screw-type bottle cap
US4220250Apr 5, 1979Sep 2, 1980Metal Closures Group LimitedClosure for containers
US4225050May 21, 1979Sep 30, 1980Segen Industries, Inc.Tamper-proof bottle caps and method of forming same
US4241842Aug 6, 1979Dec 30, 1980Toeppen Thurston HTamper indicating construction for plastic closures
US4253581Jan 12, 1979Mar 3, 1981Albert Obrist AgContainer with screw cap
US4276989Oct 31, 1979Jul 7, 1981Hicks David MClosures
US4278180Jan 24, 1980Jul 14, 1981Aluminum Company Of AmericaContainer closure with breakable annular ring
US4299328Mar 26, 1980Nov 10, 1981Anchor Hocking CorporationTamperproof bottle closure cap
US4301937Dec 3, 1979Nov 24, 1981Maxcap, Inc.Blow molded plastic bottle and plastic cap
US4305516Apr 22, 1980Dec 15, 1981Astra PlastiqueBottle cap with guarantee strip
US4322012May 9, 1980Mar 30, 1982Dairy Cap CorporationThreaded plastic bottle cap
US4325487Jun 2, 1980Apr 20, 1982Libit Sidney MSealing and locking thread system
US4343408Apr 21, 1980Aug 10, 1982General Kap (P.R.) CorporationTamper-evident plastic closure
US4349116Jul 25, 1979Sep 14, 1982Ethyl Products CompanyThermoplastic screw-threaded closure cap
US4352436Nov 28, 1980Oct 5, 1982Consumers Glass Company LimitedPilferproof cap
US4380299Sep 10, 1980Apr 19, 1983Precision Plastic Products CorporationTamper proof closure
US4394918Jul 1, 1981Jul 26, 1983Charles A. Breskin Assoc. Inc.Screw cap with tamper-proof hold ring
US4398645Jun 29, 1981Aug 16, 1983Thurston ToeppenClosure for pressurized containers
US4416383Oct 29, 1981Nov 22, 1983Frahm Carl EClosure and sealing device
US4432461Apr 9, 1982Feb 21, 1984Owens-Illinois, Inc.Tamper indicating package
US4436212May 5, 1982Mar 13, 1984Precision Plastic Products Corp.Tamper proof closure
US4442947Jan 18, 1983Apr 17, 1984Continental White Cap, Inc.Plastic closure with sealing flaps
US4450973Sep 28, 1982May 29, 1984Thurston ToeppenClosure for pressurized containers
US4461390Jun 1, 1982Jul 24, 1984General Kap (P.R.) CorporationTamper-evident plastic closure
US4461392Jun 22, 1982Jul 24, 1984American Safety Closure Corp.Threaded plastic bottle cap
US4462502Jul 22, 1982Jul 31, 1984Ethyl Molded Products CompanyThreaded closure with liner
US4479586Aug 25, 1983Oct 30, 1984General Kap CorporationTamper-evident container with drop down skirt
US4503985Oct 20, 1983Mar 12, 1985Owens-Illinois, Inc.Tamper indicating package with large diameter opening
US4526282Jan 5, 1984Jul 2, 1985Sun Coast Plastics, Inc.Tamper proof closure cap, method, and tool for making same
US4526284Sep 7, 1984Jul 2, 1985Metal Closures LimitedPlastic closure with sealing fin
US4529096Dec 4, 1984Jul 16, 1985Consumers Glass Company LimitedPilferproof cap
US4540102Nov 14, 1983Sep 10, 1985Walter WiedmerResilient material screw top for containers
US4552328Mar 1, 1985Nov 12, 1985Sun Coast Plastics, Inc.Mold for making tamper-proof closure
Non-Patent Citations
Reference
1650 444-93915531.3-Aug. 16, 1999-Crown Cork AG Romerstrasse83 CH-4153 Reinach Switzerland-OPPOSITION.
2650 444-93915531.3—Aug. 16, 1999—Crown Cork AG Romerstrasse83 CH-4153 Reinach Switzerland—OPPOSITION.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6991123 *Feb 6, 2003Jan 31, 2006Closures And Packaging Services LimitedClosure with extended seal member
US7434703Sep 27, 2004Oct 14, 2008Rexam Prescription Products Inc.Child-resistant tamper-indicating package
US7975864 *Feb 26, 2009Jul 12, 2011Closures And Packaging Services LimitedLinerless bore seal closure
US8393484 *Jun 4, 2008Mar 12, 2013Tetra Laval Holdings & Finance S.A.Closure for a sealed container of a pourable food product, and method of producing thereof
US8596477Dec 28, 2006Dec 3, 2013Silgan White Cap LLCRetortable package with plastic closure cap
US8807360 *Apr 30, 2009Aug 19, 2014Closure Systems International Inc.Tamper-evident bottle and closure having vents
US20100140271 *Jun 4, 2008Jun 10, 2010Tetra Laval Holdings & Finance S.A.Closure for a sealed container of a pourable food product, and method of producing thereof
US20100213159 *Oct 2, 2006Aug 26, 2010Valois SasCover member, method of producing one such member and fluid product dispenser using one such member
US20110024423 *Apr 30, 2009Feb 3, 2011John ErspamerTamper-evident package with improved opening performance
US20120273452 *Jan 6, 2011Nov 1, 2012Soehnlen Daniel PCombined lip and shoulder seal for threaded cap
Classifications
U.S. Classification215/341, 215/343, 215/DIG.1, 215/344
International ClassificationB65D41/02, B65D41/32, B65D41/04
Cooperative ClassificationY10S215/01, B65D41/0428
European ClassificationB65D41/04B2
Legal Events
DateCodeEventDescription
Apr 26, 2011FPExpired due to failure to pay maintenance fee
Effective date: 20110304
Mar 4, 2011LAPSLapse for failure to pay maintenance fees
Oct 11, 2010REMIMaintenance fee reminder mailed
Sep 5, 2006FPAYFee payment
Year of fee payment: 4
Jun 15, 2000ASAssignment
Owner name: CLOSURES AND PACKAGING SERVICES LIMITED, GREAT BRI
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DRUITT, RODNEY MALCOLM;FURLONG, MICHAEL PATRICK;REEL/FRAME:010905/0693;SIGNING DATES FROM 20000229 TO 20000410
Owner name: CLOSURES AND PACKAGING SERVICES LIMITED P.O. BOX 1